package xin3.Example03;
class Student{
    String name;
    int age;
    void read(){
        System.out.println("大家好，我是"+name+",年龄"+age);
    }
}

public class Example03 {
    public static void main(String[] args){
        Student stu = new Student();
        stu.name = "张三";
        stu.age = -18;
        stu.read();
    }
}